{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6fa2f37346054174ccada6e3f7c615d00a9eceb0fb8d06eea99c916d92c4c239",
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    "signer": "0x3B13b5370f9Abe46b4FAF607242E5bf602E2c8C4",
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  }
}